The 19-year-old posted some Instagram pics with her pal on Thursday, taken from her recent trip to London.

In the shots Paris clutches a single red rose, while Cara playfully nibbles on her baseball cap.

'So f*cking happy i got to see my favorites, can’t wait to come back again soon,' Paris captioned the set.

The pair were spotted heading back to a hotel hand-in-hand following a concert in the English capital on late Monday night.

The duo first romance rumours after they were first spotted sneaking out of the fire escape of a nightclub hand-in-hand in November; they have reportedly been 'hanging out' after 'hitting it off' at the MTV Movie Awards last year.

On Thursday Paris was back in LA solo; she was spotted stocking up on cigarettes during a refueling stop.

The model was on her way back from Hollywood where she'd spent the day doing fashion shoots at a studio.

Her funky style was on show as she rocked high-tops and black leggings with a cropped blue jacked and multi-colored scarf.

It wasn't hard to distinguish which vehicle was hers either, the Jeep covered in bumper stickers being top suspect.

Emerging from the gas station, her keys, phone, shades and two packs of smokes turned out to be a little too much to juggle, as she spilled one box of Marlboro.

The fruits of her latest campaign she also shared on Instagram on Thursday; a Calvin Klein shoot with Millie Bobby Brown and Lulu Tenney.

The day before, Paris took to Instagram to wish a happy birthday to her little brother Prince Michael Jackson II, AKA Blanket.

The elusive teen, who is much more wary of the public eye than his older siblings, turned 16 on Wednesday.

'Out of respect to my little brothers privacy I wont be posting too many pictures but omfg ISNT HE THE F*CKING CUTEST' she captioned one.

Despite the disclaimer, she went on to share several throwbacks of the admittedly adorable child.

The siblings — including eldest brother Prince who turned 21 last week — have remained close since the death of their pop superstar father Michael Jackson at age 50 in June 2009.